add a CAD interface to the Network plot

[AhmedAredah]

In the Network creation using the GUI, the user has to write the nodes' coordinates in a table and link these nodes using links. This is very inefficient since the user will find it very hard. We should Add a CAD interface to the Network creation so the user can create and visualize the track. Also, the user should be able to export a screenshot of the network to the summary report.